United States
Department of Defense.

United Kingdom
Ministry of Defence.

France
Ministère de la Défense.

Australia
Department of Defence.

New Zealand
Ministry of Defence New Zealand (Manatu Kaupapa Waonga).

Papua New Guinea
Department of Defence.

Canada
Department of National Defence and Canadian Forces (DND/CF), also known as the Ministère de la défense nationale et les Forces canadiennes (MDN/FC).

Egypt
Egyptian Armed Forces.

Lesotho
Ministry of Defence.

Malawi
Ministry of Defence.

Mauritius
Ministry of Defense and Home Affairs.

South Africa
Department of Defence.

Albania
Ministry of Defence.

Bulgaria
Ministry of Defence of the Republic of Bulgaria.

Belgium
Defence.

Denmark
Ministry of Defence.

Estonia
Estonian Defence Forces.

Finland
Ministry of Defence.

Greece
Hellenic Ministry of Defence.

Ireland
Department of Defence.

Italy
Ministry of Defence, also known as the Ministero della Difesa.

Hungary
Hungarian Ministry of Defence, also known as the Honvédelmi Minisztérium.

Latvia
Ministry of Defence.

Lithuania
Ministry of National Defence.

Netherlands
Ministry of Defence of The Netherlands, also known as the Ministerie van Defensie.

Norway
Ministry of Defence.

Romania
Ministry of National Defense.

Poland
Ministry of Defence.

Slovakia
Ministry of Defence of the Slovak Republic.

Slovenia
Ministry of Defense.

Switzerland
Federal Department of Defence, Civil Protection and Sports.

Germany
Federal Ministry of Defence, properly called the Bundesministerium der Verteidigung.